Job Description

Principal Mechanical Design Engineer

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Location:
Bristol, GB, BS16 1EJ Devonport, Plymouth, GB, PL2 2BG
Onsite or Hybrid: Hybrid

Job Title: Principal Mechanical Design Engineer

Location: Stoke Gifford, Bristol or Plymouth, Devon + Hybrid Working Arrangements

Compensation: From 59,000 negotiable depending on experience + Benefits

Role Type: Full time / Permanent

Role ID: SF67040

At Babcock we're working to create a safe and secure world, together, and if you join us, you can play your part as a Principal Mechanical Design Engineer at our Bristol or Plymouth site.

The role

As a Principal Mechanical Design Engineer, you will support our work on the Patria 6x6 armoured personnel carrier vehicle programme, following our agreement to be Patria's UK build partner. This is a high-profile opportunity to join a major defence programme, contributing to the delivery of a proven, NATO-backed platform for the British Army. This is a unique opportunity to lead innovative engineering projects that directly contribute to national security and global safety. You'll shape the future of mechanical design, working on complex systems from concept through to production, while growing your career in a dynamic and purpose-driven environment.





Day-to-day you'll be:




Leading the mechanical design of vehicle systems, subsystems, and components Producing and reviewing detailed 3D CAD models, drawings, and engineering documentation Conducting design reviews, tolerance studies, and engineering calculations Collaborating with cross-functional teams to ensure seamless integration and manufacturability Supporting prototype builds, testing, and validation activities




This role is full time, 37.5 hours per week and provides hybrid working arrangements.

Essential experience of the Principal Mechanical Design Engineer

Extensive experience in mechanical design within the defence, automotive, or aerospace sectors Strong understanding of materials, manufacturing processes, and mechanical analysis techniques

Qualifications for the Principal Mechanical Design Engineer

Degree in Mechanical Engineering or a related discipline Proficiency in 3D CAD tools (e.g., Creo, SolidWorks, CATIA) and PLM systems

Security Clearance

The successful candidate must be able to achieve and maintain Security Check (SC) security clearance for this role.





Many of the positions within our company are subject to national security clearance and Trade Control restrictions. This means that your eligibility for certain roles may be affected by your place of birth, nationality, current or former citizenship, and any residency you hold or have held. Further details are available at United Kingdom Security Vetting: clearance levels - GOV.UK (www.gov.uk).

What we offer

Generous holiday allowance Matched contribution pension scheme, with life assurance Access to a Digital GP, annual health check, and nutritional consultations through Aviva DigiCare+ Employee share scheme Employee shopping savings portal Payment of Professional Fees Reservists in the armed forces receive 10-days special paid leave Holiday Trading is a benefit that allows UK Babcock employees to buy additional leave or to sell up to one working week of annual leave from their annual entitlement. This Window opens February through to March annually. 'Be Kind Day' enables employees to take one working day's paid leave a year (or equivalent hours) to undertake volunteering work with their chosen organisation or registered charity Excellent development opportunities and benefits package including an employee assistance programme supporting physical, mental and financial wellbeing.

Babcock International

For over a century Babcock has helped to defend nations, protect communities and build a better world. To continue, we must adapt, advance and be a sustainable business with a shared goal.





We are a disability confident committed employer. If you have a disability or need any reasonable adjustments during the application and selection stages, please email careers@babcockinternational.com with the subject header 'Reasonable adjustments requirement'. We're committed to building an inclusive culture where everyone's free to thrive. We are happy to talk about flexible working - please ask about alternative patterns of work at interview.

Closing date: 20/10/2025

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Design Engineer, Mechanical Engineer, Aerospace Engineering, Engineer, Manufacturing Engineer, Engineering